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Finding the Fourth Proportional to 399.41, 551.19 and 242.01

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Solution

The fourth proportional to 399.41, 551.19 and 242.01 is: 333.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.41 : 551.19 = 242.01 : x
  2. Step 2: Convert to fraction form
    399.41/551.19 = 242.01/x
  3. Step 3: Cross multiply
    399.41x = 551.19 × 242.01
  4. Step 4: Simplify right side
    399.41x = 133,389.53
  5. Step 5: Solve for x
    x = 133,389.53/399.41
  6. Step 6: Final answer
    x = 333.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.